Did you know there are some financial metrics that can provide clues of a potential multi-bagger? Ideally, a business will show two trends; firstly a growing return on capital employed (ROCE) and secondly, an increasing amount of capital employed. If you see this, it typically means it's a company with a great business model and plenty of profitable reinvestment opportunities. So when we looked at Century Aluminum (NASDAQ:CENX) and its trend of ROCE, we really liked what we saw.

Return On Capital Employed (ROCE): What Is It?

Just to clarify if you're unsure, ROCE is a metric for evaluating how much pre-tax income (in percentage terms) a company earns on the capital invested in its business. To calculate this metric for Century Aluminum, this is the formula:

Return on Capital Employed = Earnings Before Interest and Tax (EBIT) ÷ (Total Assets - Current Liabilities)

0.0097 = US$13m ÷ (US$1.8b - US$428m) (Based on the trailing twelve months to June 2024).

Therefore, Century Aluminum has an ROCE of 1.0%. Ultimately, that's a low return and it under-performs the Metals and Mining industry average of 9.4%.

In the above chart we have measured Century Aluminum's prior ROCE against its prior performance, but the future is arguably more important. If you'd like to see what analysts are forecasting going forward, you should check out our free analyst report for Century Aluminum .

What The Trend Of ROCE Can Tell Us

We're delighted to see that Century Aluminum is reaping rewards from its investments and has now broken into profitability. The company now earns 1.0% on its capital, because five years ago it was incurring losses. Interestingly, the capital employed by the business has remained relatively flat, so these higher returns are either from prior investments paying off or increased efficiencies. So while we're happy that the business is more efficient, just keep in mind that could mean that going forward the business is lacking areas to invest internally for growth. After all, a company can only become a long term multi-bagger if it continually reinvests in itself at high rates of return.

On a side note, we noticed that the improvement in ROCE appears to be partly fueled by an increase in current liabilities. The current liabilities has increased to 24% of total assets, so the business is now more funded by the likes of its suppliers or short-term creditors. It's worth keeping an eye on this because as the percentage of current liabilities to total assets increases, some aspects of risk also increase.

In Conclusion...

As discussed above, Century Aluminum appears to be getting more proficient at generating returns since capital employed has remained flat but earnings (before interest and tax) are up. And with the stock having performed exceptionally well over the last five years, these patterns are being accounted for by investors. Therefore, we think it would be worth your time to check if these trends are going to continue.

Like most companies, Century Aluminum does come with some risks, and we've found 3 warning signs that you should be aware of.

If you want to search for solid companies with great earnings, check out this free list of companies with good balance sheets and impressive returns on equity.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.